The people who think 9/11 may have been an ‘inside job’

On 11 September 2001, four passenger planes were hijacked by radical Islamist terrorists – almost 3,000 people were killed as the aircraft were flown into the World Trade Centre, the Pentagon and a Pennsylvania field. Just hours after the collapse of New York’s Twin Towers, a conspiracy theory surfaced online which persists more than 16 years later.